in the absence of a net external force, the momentum of an object or system of objects unchanged.
What is the law of conservation of momentum?
100
what are two quantities necessary to determine a vector quantity?
What is speed and direction?
100
how fast something is moving in the path distance moving per. Time the magnitude of the velocity.
What is speed?
200
friction, or drag, that acts on something moving through the air
What is air resistance?
200
pe=mgh
What is potential energy equation?
200
the everybody continues in its state of rest, or in motion in a straight line at constant speed, unless acted upon by a none zero law.
What is newton's first law/ law of inertia?
200
What produces acceleration?
What is unbalanced forces on an object?
200
any object that moves through the air or through space acted on by only gravity (and air resistance, if any).
What is a projectile?
300
the property of an object or system that enables it to do work; measured in joules
What is energy?
300
w=fd
What is the equation for work?
300
energy cannot be created or destroyed only. It may be transferred from one form into another, but the total amount of energy never changes.
What is the law of conservation of energy?
300
Red, orange, yellow, green, blue, indigo, violet
What is the color spectrum?
300
path distance divided by time
What is average speed?
400
the force on a body due to the gravitational attraction of another body (commonly earth)
What is weight?
400
f=ma
what is newton's second law?
400
the angle of incidence for a wave that strikes a surface is equal to the angle of reflection. This is true for both partially and totally reflected waves
What is the law of reflection?
400
Does refraction tend to make objects submerged in water seem shallower or deeper than they really are?
What is shallower?
400
one place in a wave where the wave is highest or the disturbance is greatest.
What is a crest?
500
The distance from the midpoint to the maximum (crest) of a wave or, equivalently, from the midpoint to the minimum (trough)
What is amplitude?
500
p=f/a
What is the pressure equation?
500
whenever one body exerts a force on a second body, the second body exerts an equal and opposite force on the first
What is newtons third law?
500
can an action force exist without a reaction force?